1. Multiple Sclerosis Study Center, Gallarate Hospital, ASST Valle Olona, Via Eusebio Pastori 4, 21013 Gallarate, Italy
2. Department of Neurology, San Raffaele Hospital, Milan, Italy
3. Multiple Sclerosis Center, Binaghi Hospital, ATS Sardegna, Cagliari, Italy/Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
4. Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari Aldo Moro, Bari, Italy
5. Child and Adolescence Neuropsychiatry Unit, Department of Basic Medical Sciences, Neurosciences and Sense Organs, University of Bari Aldo Moro, Bari, Italy
6. Centro Sclerosi Multipla, Azienda Ospedaliera Sant Andrea, Università degli studi di Roma La Sapienza, Rome, Italy
7. Centro Sclerosi Multipla, Azienda Ospedaliera Sant Andrea, Università degli studi di Roma La Sapienza,Rome, Italy/Department of Medical and Surgical Science and Advanced Technologies, GF Ingrassia, Neurosciences Section, Multiple Sclerosis Center, University of Catania, Catania, Italy
8. Neurologia & CRESM (Centro Riferimento Regionale SM), AOU San Luigi, Orbassano, Italy
9. Multiple Sclerosis Centre, Department of Neurosciences DNS, University Hospital, University of Padua, Padua, Italy
10. Child Neuropsychiatry Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
11. Department NEUROFARBA, University of Florence, Florence, Italy
12. Multiple Sclerosis Center, IRCCS Neuromed, Isernia, Italy
13. UOSD Riabilitazione e Sclerosi Multipla, Villa Mazzacorati, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
14. Simple Unit Multiple Sclerosis, University Hospital of Ospedali Riuniti, Foggia, Italy
15. Multiple Sclerosis Center “Dino Ferrari,” University of Milan IRCCS Fondazione Ca’ Granda, Ospedale Maggiore Policlinico, Milan, Italy
16. Department of Neurology, Neurological Institute C. Mondino, Pavia, Italy
17. Department of Neurology, San Raffaele Hospital, Milan, Italy/Department of Neurology, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Hospital, Milan, Italy/